To have various IP ranges in the same subnet and assign the IP Address depending of the device type that sends the request.

Mon Aug 5 08:38:55 UTC 2019

Hi everybody

I'm testing this:

###############################################################
class "smartphones" {
  match if option vendor-class-identifier = "android-dhcp-9";
}

subnet 10.53.0.0 netmask 255.255.0.0 {

  default-lease-time 86400;
  max-lease-time 172800;

  option broadcast-address 10.53.255.255;
  option routers 10.53.1.1;

  # Unknown Clients Range.
  pool {
    deny known-clients;
    range 10.53.33.1 10.53.35.254;
  }
..
  # Smartphones Range.
  pool {
    allow members of "smartphones";
    deny known-clients;
    range 10.53.10.2 10.53.11.254;
  }..
###############################################################

My smartphone have a IP from "range 10.53.33.1 10.53.35.254;"

To test if the classification work, I turn off the WIFI of my smartphone,
wait some seconds and turn on the WIFI again, but the WIFI get the same IP
that it had previously from "range 10.53.33.1 10.53.35.254;".

Can you tell me how I can test this config correctly?

Best regards

..

El jue., 1 ago. 2019 a las 18:01, Sten Carlsen (<stenc at s-carlsen.dk>)
escribió:

>
>
> What Sten is doing is as described in the manual (man dhcpd.conf) section under subclassing. So your "laptop" class might look like :
> class "laptop" {
>   match pick-first-value (option dhcp-client-identifier, hardware);
> }
> subclass "laptop" 1:aa:bb:cc:dd:ee:ff ;
> subclass "laptop" 1:ff:ee:dd:cc:bb:aa ;
> ...
> This works if you know (in advance, or at least as they are "registered" onto the network) the client ID and/or MAC address for each device, it doesn't work if devices can just come and go as they please.
>
>
> Examples of how my files look, only relevant details are shown:
> dhcpd.conf:
>
>
> # class definitions
> class "gateway-0" {
>      match hardware;
>     }
>
>
> class "gateway-5" {
>      match hardware;
>     }
>
> # Subnet Declarations
> shared-network hjemme{
>     authoritative;
>
>     subnet 192.168.16.0 netmask 255.255.255.0{
>         option domain-name        "xx";
>         option domain-name-servers    192.168.16.20;
>         option domain-name-servers    xx;
>         option subnet-mask        255.255.255.0;
>         # B-NODE: Broadcast - no WINS
>         option netbios-node-type    1;
>         pool{
>             # NO router - these must not touch the internet
>             allow members of        "gateway-0";
>             range 192.168.16.160        192.168.16.195;
>         }
>         pool{
>             # these go to the FIBER link
>             option routers            192.168.16.5;
>             allow members of        "gateway-5";
>             range 192.168.16.50        192.168.16.150;
>         }
>     }
>
>     subnet 192.168.161.0  netmask 255.255.255.0{
>         max-lease-time 300;
>         default-lease-time 150;
>         pool{
>             # These are not known (yet) and shall not see any other host
>             deny known-clients;
>             deny members of            "gateway-0";
>             deny members of            "gateway-5";
>             range 192.168.161.100        192.168.161.150;
>         }
>     }
>
> }
>
>
> include "/etc/dhcp/subclass.conf";
>
> subclass.conf:
>
> subclass "gateway-0" 1:00:18:4d:58:a3:ae;
> subclass "gateway-0" 1:00:1c:42:84:58:bd;
> subclass "gateway-0" 1:00:1d:b3:cb:65:80 {ddns-hostname procurve-1;}
> subclass "gateway-0" 1:00:40:8C:29:1E:AE;
> subclass "gateway-0" 1:00:80:f0:8f:fd:27;
> subclass "gateway-0" 1:00:80:f0:a0:02:40;
> subclass "gateway-0" 1:28:10:7b:10:5c:a2 {ddns-hostname argus4;}
> subclass "gateway-0" 1:de:ad:be:ef:fe:ed {ddns-hostname ard;}
> subclass "gateway-5" 1:00:11:32:05:BB:E9 {always-broadcast
> on;ddns-hostname ds-209;}
> subclass "gateway-5" 1:00:16:cb:95:7a:7c;
> subclass "gateway-5" 1:00:17:f2:41:7c:ff;
> subclass "gateway-5" 1:00:18:56:22:d6:93;
> subclass "gateway-5" 1:00:1b:63:05:99:1b;
> subclass "gateway-5" 1:00:1b:63:1d:1a:f4;
> subclass "gateway-5" 1:00:1e:c2:14:ee:7b;
> subclass "gateway-5" 1:00:1e:c2:a6:f5:35;
>
>
> Sten
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>

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